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Web Application Firewalls

6 questions · ~6 min · intermediate

Web application firewalls are most useful when you understand their actual boundary: parse the request, normalise it, score suspicious semantics, and enforce policy before origin code runs. These questions focus on that boundary, the parser-mismatch risks around it, and the limits of what a WAF can infer.

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What is the core mechanism a web application firewall applies before the origin sees a request?

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